Improvement in rotary metal-shearing machines



2 Sheds-Sheet. 1. G. NEW, G. EARDLEY & W. TALBOT,

ROTARY METAL ,SHEARING MACHINE. N0.171.949-. Patented J'an.11,1876.

2 Sheets-Sheet Z. G. NEW, G. EARDLEY & W. TALBOT.

ROTARY METAL SHEARING MI XCHINE". No. 171,949. Patented. Ja/n.11,'1876.

1 I Y #lziaazzj,

UNITED STATES PATENT OFFICE.

GEORGE NEW, GEORGE EARDLEY, AND WILLIAM TALBOT, OF PITTSBURG,

,, PENNSYLVANIA.

IMiROVEMENT IN ROTARY METAL-SHEARING MACH|NES.,

Specification forming part of Letters Patent No. 171,949, dated Januarp 11, 1876; application filed November 22, 1875. 7

To all whom it may concern:

Beitknown that we, GEORGENEW, GEORGE EARDLEY, and WILLIAM TALBOT, all of Pittsburg, in the county of Allegheny and State of Pennsylvania,.have invented a new and useful Improvement in Rotary Shears; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of our invention consists in rospecification, Figure 1 is a side elevation of our improvement in rotary shears. a vertical section of the same. end view of the same.

A represents the base of the machinefB, the housings ot'the rolls, thejournals of which are placedin suitable bearings, and the cutters of the upper roll 0 made to impinge on the lower roll D through the medium of adjustingscrews 0. On the ends of the rollsG aresecured Fig. 2 is Fig. 3 is an cutters f, and lengthwise of the roll are secured cutters g. On the outer ends of the rolls 0 and D are wheels h andz',which mesh into each other, and are used for the purpose of giving the desired travel to the rolls. To the wheel h at, j, is pivoted a connecting-rod, Z0, which is connected to a horizontal shaft, it, having its axis in bearings 0. From the'shaft n projects a lever, 11, the upper end of which is forked and straddles a cross bar, r, secured between slides s of a table, t, furnished with a series of openings for the insertion of guide-pins u. 1; represents a receiving-table.

The operation of our improved machine is as follows: The sheet of iron is placed upon the table t, with one end of the sheet pressing against the guide-pins a. Motion being imparted to the rolls 0 and D, the connectingrod 7t, operating the levers m and 12, will impart to the table t a reciprocating motion, and as the table moves back from the rollsthe operator places one end of the sheet to bezsheared against the pins u, and the table, in its movementtoward the rolls, will carry the sheet to the cutters f, and the rolls G and D, impinging upon the sheet, will draw it forward, and the cutters g, coming in contact with it, will shear it into the desired length, the rolls finally delivering the sheet upon the table '0. The

lengths of the sheet will depend upon the numberof cutters g, and the width of the sheet will be determined by the distance between the cutters f.

What we claim as of our invention is- The roll 0,, furnished with cutters f and g,

in combination with the roll B and reciproeating table t, having detachable guide-pins a,

all being constructed, arranged, and operating,

with relation to each other, substantially as herein described and set forth.

In witness whereof we hereunto set our hands. v

GEORGE NEW. GEORGE EARDLEY. WILLIAM TALBOT.

V Witnesses:

A. O. J onNsToN, D. I. K. RINE. 

